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An improved method for chromosome preparations from bovine oocytes and zygotes obtained by in vitro maturation and fertilization techniques

Authors: Ocaña Quero, J.M.; Ortega Mariscal, M.A.; Pinedo Merlín, M.; Moreno-Millán, M.;

An improved method for chromosome preparations from bovine oocytes and zygotes obtained by in vitro maturation and fertilization techniques

Abstract

Se logró optimizar un método rápido para analizar citogenéticamente ovocitos y cigotos de bovino obtenidos mediante técnicas de maduración y fecundación in vitro (MIV y FIV). El método, el cual utiliza una solución hipotónica con tripsina, un sistema de agitación mediante vortex y un sistema doble de fijación en frío, contribuye a eliminar fácilmente la zona pelúcida y a hinchar a los ovocitos y cigotos favoreciendo posteriormente la extensión de los cromosomas. Este método permite obtener preparaciones de muy buena calidad para el análisis tanto del número como de la morfología de los cromosomas de los ovocitos y cigotos en cualquier estadío meiótico y mitótico.

Matured bovine oocytes and zygotes obtained by in vitro maturation and fertilization techniques (IVM and IVF) were cytogenetically prepared by using an improved method for chromosome preparations. The method, which involves use of trypsinizedhypotonic solution plus a vortex-agitated system and very cold two-step fixation process, contributes to weaken the zona pellucida and allows the swelling of oocytes and zygotes which helps the subsequent spreading of the chromosomes. This method permits to obtain preparations of good quality for examining the number and morphology of the chromosomes of oocytes and zygotes for any meiotic and mitotic stage.

Country
Spain
Related Organizations
Keywords

Citogenética, Ovocitos, Ganado vacuno, Fecundación in vitro

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green